Love Sketchbook Pro pencil. I tried to customize the Artrage pencil but could never get close. Playing around with the ink pens I found they work perfectly as a replacement. These are the settings I use to mimic the Sketchbook Pro pencil. Depending on how much coffee you've had you might need to increase the smoothness setting. Best used with a grey color.
The drawing on the right is by Joe Mad. One the left is my reproduction drawing. These pencils/Ink pens were used.
Go to File>Install Package. This will load the Pencils to the Ink Pens. Select the Ink Pen (on the half circle) and click the Presets. You'll have a new group called Sketchbook Pro Pencils. Select it and select one of the pencils. The top is my personal fav.
Also included are several pencil colors. And two non-photo blue colors.
EDIT: This program is Artrage.